condition mean min max ZT0-3 0.035767233333333336 0.0 0.1073017 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0170099 0.0 0.0340198 ZT16-19 0.0329613 0.0329613 0.0329613 ZT20-23 0.07301015 0.07301015 0.07301015